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package android.taobao.atlas.startup.patch.releaser;

import android.app.PreVerifier;
import android.os.Build;
import android.taobao.atlas.runtime.RuntimeVariables;
import android.taobao.atlas.startup.patch.*;
import android.util.Log;
import com.alibaba.patch.PatchUtils;

import java.io.*;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * Created by lilong on 16/12/21.
 */
public class NativeLibReleaser {

    private static final String SO_PATCH_SUFFIX = ".patch";


    public static final String SO_PATCH_META = "SO-PATCH-INF";

    private static PatchMerger patchMerger;

    public NativeLibReleaser() {
        if(Boolean.FALSE.booleanValue()){
            String.valueOf(PreVerifier.class);
        }
    }

    public static boolean releaseLibs(File apkFile, File reversionDir) throws IOException {
        ZipFile rawZip = new ZipFile(KernalConstants.APK_PATH);
        if (new File(reversionDir, "lib").exists() && new File(reversionDir, "lib").listFiles().length > 0) {
            return true;
        }
        ZipFile bundleFile = new ZipFile(apkFile);
        PatchVerifier patchVerifier = null;
        if (bundleFile.getEntry(SO_PATCH_META) != null) {
            patchVerifier = new NativePatchVerifier(bundleFile.getInputStream(bundleFile.getEntry(SO_PATCH_META)));
        }
        patchMerger = new NativePatchMerger(patchVerifier);
        String extractTag = "lib/armeabi";
        if (Build.CPU_ABI.contains("x86")) {
            if (bundleFile.getEntry("lib/x86/") != null) {
                extractTag = "lib/x86";
            }
        }
        for (Enumeration entries = bundleFile.entries(); entries.hasMoreElements(); ) {
            ZipEntry zipEntry = (ZipEntry) entries.nextElement();
            String entryName = zipEntry.getName();
            if (entryName.startsWith(extractTag) && !entryName.equalsIgnoreCase("../")) {

                try {
                    String targetPath = String.format("%s%s%s%s%s", mappingInternalDirectory(reversionDir), File.separator, "lib", File.separator,
                            entryName.substring(entryName.lastIndexOf(File.separator) + 1, entryName.length()));
                    if (zipEntry.isDirectory()) {
                        File decompressDirFile = new File(targetPath);
                        if (!decompressDirFile.exists()) {
                            decompressDirFile.mkdirs();
                            continue;
                        }
                    } else {
                        String fileDir = targetPath.substring(0, targetPath.lastIndexOf("/"));
                        File fileDirFile = new File(fileDir);
                        if (!fileDirFile.exists()) {
                            fileDirFile.mkdirs();
                        }
                        BufferedInputStream bi = new BufferedInputStream(bundleFile.getInputStream(zipEntry));
                        inputStreamToFile(bi, new File(targetPath));
                        if (entryName.endsWith(SO_PATCH_SUFFIX)) {
                            String soName = new File(targetPath).getName().replace(SO_PATCH_SUFFIX, "");
                            File oringalSo = findBaseSo(soName, entryName, rawZip, targetPath);
                            Log.e("NativeLibReleaser", "oringal so-->" + oringalSo.getAbsolutePath());

                            File newSo = new File(new File(targetPath).getParentFile(), new File(targetPath).getName().replace(SO_PATCH_SUFFIX, ""));
                            if (!new File(targetPath).exists() || !oringalSo.exists()) {
                                throw new IOException("maindex so merge failed! because " + targetPath + " is not exits or " + oringalSo.getAbsolutePath() + " is not exits!");
                            }
                            patchMerger.sumitForMerge(oringalSo, new File(targetPath), newSo);
                        }
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                    return false;
                }

            }
        }
        return patchMerger.waitForResult();
    }

    private static File findBaseSo(String soName, String entryName, ZipFile rawZip, String targetPath) throws IOException {
        File libDir = new File(RuntimeVariables.androidApplication.getFilesDir().getParentFile(), "lib");
        if (new File(libDir, soName).exists() && new File(libDir, soName).canRead()) {
            return new File(libDir, soName);
        } else {
            File oringalSo = new File(new File(targetPath).getParentFile(), new File(targetPath).getName().replace(SO_PATCH_SUFFIX, ".old"));
            inputStreamToFile(rawZip.getInputStream(rawZip.getEntry(entryName.replace(SO_PATCH_SUFFIX, ""))), oringalSo);
            return oringalSo;
        }

    }

    private static void inputStreamToFile(InputStream inputStream, File oringalSo) throws IOException {
        BufferedOutputStream bos = new BufferedOutputStream(
                new FileOutputStream(oringalSo));
        byte[] readContent = new byte[4096];
        int readCount = inputStream.read(readContent);
        while (readCount != -1) {
            bos.write(readContent, 0, readCount);
            readCount = inputStream.read(readContent);
        }
        bos.close();
    }

    private static File mappingInternalDirectory(File revisionDir) {
        if (!revisionDir.getAbsolutePath().startsWith(KernalConstants.baseContext.getFilesDir().getAbsolutePath())) {
            File internalLibDir = new File(KernalConstants.baseContext.getFilesDir(), String.format("storage/com.taobao.maindex_internal/%s", revisionDir.getName()));
            int retryCount = 2;
            do {
                if (!internalLibDir.exists()) {
                    internalLibDir.mkdirs();
                }
                if (internalLibDir.exists()) {
                    break;
                }
                retryCount--;
            } while (retryCount > 0);
            if (!internalLibDir.exists()) {
                Log.e("BundleArchiveRevision", "create internal LibDir Failed : com.taobao.maindex");
            }
            return internalLibDir;
        } else {
            return revisionDir;
        }
    }
}
